焼入応力より見た焼割れ現象について

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書誌事項

タイトル別名
  • On Quench-Cracking Phenomena as Viewed from the Aspect of Quenching Stresses
  • ヤキイレ オウリョク ヨリ ミタ ヤキワレ ゲンショウ ニ ツイテ

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抄録

Baseing themselves on the results of actual measurements of quenching stresses, the authors considered the quench-cracking phenomena in high carbon steel cylinders, and arrived at the following conclusions: (1) Quenching cracks due to water quenching frequently occur in the state of surface compression. They are caused by a tri-axial tension below the surface. (2) Great liability to quenching cracks at high quenching temperatures is attributed not to the quenching stresses but to the reduction of strength due to overheating. (3) Intensification of the effect of thermal contraction results in less liability to quenching cracks, while an increase in the effect of transformational expansion results in greater liability to them. (4) Tempering can considerably decrease the quenching stresses; so tempering immediately after quenching would be effective for prevention of quenching cracks (aging cracks).

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 25 (5), 360-364, 1961

    公益社団法人 日本金属学会

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